NDLI: Diurnal changes in photosynthesis and antioxidants of Angelica sinensis as influenced by cropping systems

Content Provider	Springer Nature Link
Author	Zhang, X. H. Lang, D. Y. Zhang, E. H. Bai, C. C. Wang, H. Z.
Copyright Year	2013
Abstract	Diurnal dynamics of photosynthetic character of Angelica sinensis, as well as effect of continuous cropping on leaf photosynthetic character, antioxidant enzyme activity and growth of A. sinensis were investigated under field condition. The results showed that the diurnal net photosynthetic rate of A. sinensis in sunny day exhibited a double-peak pattern, and the peaks occurred at 9:45 and 16:45 h, respectively. There was a significant midday depression with A. sinensis, which was caused principally by stomatal factors such as stomatal conductance. The results also showed that net photosynthetic rate (P $_{N}$), transpiration rate (E), stomatal conductance (g $_{s}$), intercellular CO$_{2}$ concentration (C $_{i}$), and chlorophyll content (Chl) of A. sinensis plants under continuous cropping were significantly lower than those of the control. The activity of total superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT), and growth parameters of A. sinensis plants were significantly decreased under continuous cropping condition. This study provides evidence of continuous cropping obstacle effect on photosynthesis, antioxidant enzyme activity, and growth parameters of A. sinensis in a field experiment, which partly explained the yield reduction of A. sinensis in the field, when it was cultivated continuously on the same soil.
Starting Page	252
Ending Page	258
Page Count	7
File Format	PDF
ISSN	03003604
Journal	Photosynthetica
Volume Number	51
Issue Number	2
e-ISSN	15739058
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-02-21
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science

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